Collaborator Says Korean Cloning Pioneer Admitted Faking Stem Cell Results

SEOUL, South Korea -- A doctor who provided human eggs for research by cloning pioneer Hwang Woo-suk said in a broadcast Thursday that the South Korean scientist agreed to withdraw a key research paper because most of the stem cells produced for the article were faked.

Roh Sung-il, chairman of the board at Mizmedi Hospital, told KBS television that Hwang had agreed to ask the journal Science to withdraw the paper, published in June to international acclaim. Roh was one of the co-authors of the article that detailed how individual stem cell colonies were created for 11 patients through cloning.

Roh also told MBC television that Hwang had pressured a former scientist at his lab to fake data to make it look like there were 11 stem cell colonies.

In a separate report, a former researcher told MBC that Hwang ordered him to fabricate photos to make it appear there were 11 separate colonies from only three.

"This is something I shouldn't have done," said the researcher, who was identified only by his last name, Kim, and whose face was...